Finisar Surveyor manual TCP Checksum Errors, SA=206.250.228.69 DA=206.250.228.11

Expert Features 10

Transport Layer

TCP Checksum Errors

Counter

TCP Checksum Errors is a counter of all incorrect TCP checksums over a period of time per segment. A count of all TCP Checksum Errors events displays in the Overview counters of Expert View.

Expert Symptom

TCP Checksum Errors events are automatically logged as expert symptoms. The Symptom Summary field provides the IP source and destination address for the checksum error. For example:

SA=[206.250.228.69] DA=[206.250.228.11]

Diagnostic Details

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Problem Description:

A TCP/IP packet has a checksum value that is in error.

The packet may be discarded.

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Probable Cause(s):

1.The station that sent this packet may have a faulty network stack.

2.The router that forwarded this packet may have a faulty stack.

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Recommended Action(s):

1.Identify the station that sent this packet (Source Addresses).

2.Verify the transport layer stack for this station.

3.The station may need to be reset.

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